Assignee
VANN ROY RANDELL
7 granted patents·378 citations·filing 1974–1977
Technology mixE21B7
Top patents by PatentIndex Score
7 records- 0198US4125159AMethod and apparatus for isolating and treating subsurface stratasVANN ROY RANDELL·Filed 1977·Granted Nov 14, 1978·252 cites·11 claims
- 0270US4066282APositive tubing release couplingVANN ROY RANDELL·Filed 1976·Granted Jan 3, 1978·32 cites·12 claims
- 0370US3966236AReleasable couplingVANN ROY RANDELL·Filed 1974·Granted Jun 29, 1976·30 cites·2 claims
- 0458US4078611AHigh temperature perforating methodVANN ROY RANDELL·Filed 1976·Granted Mar 14, 1978·20 cites·12 claims
- 0553US3990507AHigh temperature perforating apparatusVANN ROY RANDELL·Filed 1975·Granted Nov 9, 1976·17 cites·10 claims
- 0649US4040482AOptional fire and release tool and methodVANN ROY RANDELL·Filed 1976·Granted Aug 9, 1977·15 cites·11 claims
- 0745US4009757ASand consolidation methodVANN ROY RANDELL·Filed 1975·Granted Mar 1, 1977·12 cites·10 claims
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →